
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

/**
 * AUTO-GENERATED FILE. DO NOT MODIFY.
 */

// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
import { extend } from 'zrender/lib/core/util.js';

function normalize(a) {
	if (!(a instanceof Array)) {
		a = [a, a];
	}

	return a;
}

export default function graphEdgeVisual(ecModel) {
	ecModel.eachSeriesByType('graph', function (seriesModel) {
		var graph = seriesModel.getGraph();
		var edgeData = seriesModel.getEdgeData();
		var symbolType = normalize(seriesModel.get('edgeSymbol'));
		var symbolSize = normalize(seriesModel.get('edgeSymbolSize')); // const colorQuery = ['lineStyle', 'color'] as const;
		// const opacityQuery = ['lineStyle', 'opacity'] as const;

		edgeData.setVisual('fromSymbol', symbolType && symbolType[0]);
		edgeData.setVisual('toSymbol', symbolType && symbolType[1]);
		edgeData.setVisual('fromSymbolSize', symbolSize && symbolSize[0]);
		edgeData.setVisual('toSymbolSize', symbolSize && symbolSize[1]);
		edgeData.setVisual('style', seriesModel.getModel('lineStyle').getLineStyle());
		edgeData.each(function (idx) {
			var itemModel = edgeData.getItemModel(idx);
			var edge = graph.getEdgeByIndex(idx);
			var symbolType = normalize(itemModel.getShallow('symbol', true));
			var symbolSize = normalize(itemModel.getShallow('symbolSize', true)); // Edge visual must after node visual

			var style = itemModel.getModel('lineStyle').getLineStyle();
			var existsStyle = edgeData.ensureUniqueItemVisual(idx, 'style');
			extend(existsStyle, style);

			switch (existsStyle.stroke) {
			case 'source':
			{
				var nodeStyle = edge.node1.getVisual('style');
				existsStyle.stroke = nodeStyle && nodeStyle.fill;
				break;
			}

			case 'target':
			{
				var nodeStyle = edge.node2.getVisual('style');
				existsStyle.stroke = nodeStyle && nodeStyle.fill;
				break;
			}
			}

			symbolType[0] && edge.setVisual('fromSymbol', symbolType[0]);
			symbolType[1] && edge.setVisual('toSymbol', symbolType[1]);
			symbolSize[0] && edge.setVisual('fromSymbolSize', symbolSize[0]);
			symbolSize[1] && edge.setVisual('toSymbolSize', symbolSize[1]);
		});
	});
}